Numerical study of the behaviour of geosynthetic-reinforced soil retaining walls under a uniform surcharge

Djebablah, Wafa; Nouaouria, Mohamed Salah; Adjabi, Souhila

doi:10.1504/ijstructe.2020.10027285

Cited by 4 publications

(7 citation statements)

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“…Note that the AASHTO (2012) conception method does not take into account the loading increments applied on the unreinforced soil for the calculation of peak tensile strength (maximum width of 0.7H), which leads to an underestimation of the tensile strength of the reinforcement layers. It is noted that similar results reported by [6], show that the width (6m and 8m) of different loading increments applied have no effect on the normalized Vol. 19, Issue 2, 543-554 peak tensile strength.…”

Section: Effect Of Loading Increments Width Lsupporting

confidence: 82%

“…Fig. 4a illustrates the peak tensile strength results under the self-weight of reinforced soil adopted in the present study and compared with those of [4,6,15]. It can be seen that the numerical results of the peak tensile strength were in good agreement with those of the above authors.…”

Section: Validation Of the Numerical Modelsupporting

confidence: 78%

“…In the first stage of this study, a series of analyses was performed to validate our model and for the parametric study to be reliable. The numerical model, reported by [4], have been considered by several researchers such as [3,6,15]. These results were also used to validate the numerical model developed in this study, because it presents a good characterization of the materials and a good construction sequence.…”

Section: Validation Of the Numerical Modelmentioning

confidence: 99%

“…He showed that this method gives a conservative solution in several cases. [6] carried out a numerical research of a geosynthetic reinforced soil walls, using the FLAC 2D (Fast Lagrangian Analysis of Continua). The numerical results show that peak tensile strength in the reinforcement layers and lateral displacement of the facing increase with increasing uniform loading increments.…”

mentioning

confidence: 99%

“…The width and position of loading are one factor that changes the response of reinforced retaining wall, have been the subject of experimental and numerical works [6,[9][10][11]. [12] studied the design of geogrid reinforced road embankments with a passive facing system.…”

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confidence: 99%

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Tensile Force Distribution And Development Within Geogrid-Reinforced Retaining Wall

Feligha,

Benamara,

Salah

et al. 2023

Civil and Environmental Engineering

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Geogrid-reinforced earth retaining walls used to improve soil quality, and provide additional shear strength in the soil mass through the tensile strength in the reinforcement layers. A numerical model was developed by finite element code PLAXIS2D, of a segmental facing geogrid-reinforced retaining wall. This research has been carried out to investigate the effect of loading increments, loading increments width, loading increments location, facing inclination angle, geogrid inclination angle, and geogrid-soil friction factor, on the behaviour of a geogrid-reinforced soil retaining wall. The results show that the failure plane occurred in the reinforced zone at the mid-height, this observation contradicted the triangular distribution with depth assumed in conception methodologies for reinforced soil retaining wall. The distribution of peak tensile strength with depth was bilinear at high loading increments and became trapezoidal at low loading ones. Furthermore, it was found that the behaviour of a geogrid-reinforced soil retaining wall is independent of loading increments width beyond 0.5H. It also seems that the loading increments location can change the shape and the position of the peak tensile strength. It also seems that the geogrid inclination angle has a major effect on the lateral facing displacements and safety factor.

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Section: Effect Of Loading Increments Width Lsupporting

confidence: 82%

Section: Validation Of the Numerical Modelsupporting

confidence: 78%